[填空题]
The Moon orbits the Earth such that the same side alwakffgz/ r .kimvd17) i2c)ycz(ys faces the ( p+qfc:xefu*miz+ ,hEarth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat the Moon as acm pfq(ex h+i :f*,+uz particle orbiting the Earth.) $\times10^{ -6}$